23.72.0.0/13

ip:	23.72.0.0 a23-72-0-0.deploy.static.akamaitechnologies.com
loc:	Japan, Chiyoda City (Tokyo)  
isp:	AS20940 Akamai International B.V. » Akamai International B.V. » Akamai Technologies, Inc. 306.202 ms
route:	23.72.0.0/13, AKAMAI - Akamai Technologies, Inc., US (Chiyoda City) ... 
reg:	23.72.0.0/13, US, ARIN, 2013-01-25
asn:	AS20940 - AKAMAI-ASN1 Akamai International B.V., NL
addr:	  145 Broadway Cambridge MA 2142 US
online:	  468.743 » latency: 160 ms (215ms) 

see also:
   23.72.32.0/22    AS16625  AKAMAI Akamai Technologies, Inc., IE
   23.72.36.0/24    AS20940  AKAMAI Akamai Technologies, Inc., IE
   23.72.37.0/24    AS20940  AKAMAI Akamai Technologies, Inc., IE
   23.72.80.0/24    AS20940  AKAMAI Akamai Technologies, Inc., NL
   23.72.88.0/24    AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.90.0/24    AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.91.0/24    AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.92.0/24    AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.138.0/24   AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.139.0/24   AS20940  AKAMAI Akamai Technologies, Inc., SE
   23.72.182.0/23   AS20940  AKAMAI Akamai Technologies, Inc., US
   23.72.226.0/24   AS20940  AKAMAI Akamai Technologies, Inc., FR
   23.72.227.0/24   AS20940  AKAMAI Akamai Technologies, Inc., FR
   23.72.248.0/24   AS20940  AKAMAI Akamai Technologies, Inc., FR
   23.72.249.0/24   AS20940  AKAMAI Akamai Technologies, Inc., FR
   23.72.250.0/24   AS20940  AKAMAI Akamai Technologies, Inc., FR
   23.72.251.0/24   AS20940  AKAMAI Akamai Technologies, Inc., CL
   23.72.252.0/24   AS20940  AKAMAI Akamai Technologies, Inc., NL
   23.72.253.0/24   AS20940  AKAMAI Akamai Technologies, Inc., NL